Apply pipe sealant or Teflon® tape to the threads of the new sender/switch.

Install the temperature sender/switch and connect the electrical connector.

Connect the negative battery cable. Fill the cooling system.

Run the engine and check for leaks.

Fig. Detach the connector for the ECT sensor and . . .

Fig. . . . and loosen the sensor using a suitable socket or other drive tool

Fig. Once the sensor is sufficiently loose, remove the sensor from the intake manifold by hand

Fig. Use a quality thread sealant to . . .

Fig. . . . coat the threads of the ECT sensor before installation

Fig. The ECT sensor must be tightened with a torque wrench to specifications

Disconnect the negative battery cable.

Drain and recycle the engine coolant.

CAUTION

Never open, service, or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. In addition, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

Remove the air cleaner outlet tube if necessary.

Detach the ECT sensor connector.

Remove the ECT sensor from the intake manifold.

To install:

Coat the sensor threads with Teflon® sealant.

Thread the sensor into position and tighten to 6-8 ft. lbs. (8-13 Nm).